In the case of Orix Financial Services, Inc. v. Leclair (S.D.N.Y. Feb 26, 2007) the court found that under Rhode Island law, an individual who assumes to be acting for a corporation without authority to do so is liable for all debts arising from the action.
Mr. Leclair defaulted under his obligation under a note. The maker of the note was "Brian Leclair DBA T and D Excavating Co." Unfortunately for Mr. Leclair, the charter for T and D had beeen revoked two year prior to the execution of the note.
Under R.I. Gen. laws Section 7-1.2-1801: "All individuals who assume to act as a corporation without authority so to do are jointly and severally liable for all debts and liabilities incurred or arising as a result of that action."